US4544203A - Foldable head rest - Google Patents
Foldable head rest Download PDFInfo
- Publication number
- US4544203A US4544203A US06/659,693 US65969384A US4544203A US 4544203 A US4544203 A US 4544203A US 65969384 A US65969384 A US 65969384A US 4544203 A US4544203 A US 4544203A
- Authority
- US
- United States
- Prior art keywords
- frame
- frames
- parallel
- portions
- legs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004744 fabric Substances 0.000 claims abstract description 21
- 239000004576 sand Substances 0.000 abstract description 9
- 210000002414 leg Anatomy 0.000 description 29
- 210000003414 extremity Anatomy 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000003319 supportive effect Effects 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/10—Pillows
- A47G9/1009—Rigid frame constructions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32549—Articulated members including limit means
- Y10T403/32557—Articulated members including limit means for pivotal motion
- Y10T403/32591—Opposed stops on one member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/70—Interfitted members
- Y10T403/7005—Lugged member, rotary engagement
Definitions
- a variety of compact support apparatuses including head, limb and buttock rests, have been developed for leisurely relaxation.
- head rests have been designed to be foldably compact during nonuse.
- the supportive fabric panels provide the limitation or restriction of rotation of the frame members when the panels are tautly extended in the fully open position. This feature is shown on the head rests of Nelson et al. and Marks.
- a foldable head rest is used preferably for supporting a person's head while in the prone position, at the beach, for example or lying on the floor reading or watching television.
- a pair of rectangular frames and their attached supportive rectangular fabric panels comprise the head rest which may be easily carried in a flat, folded configuration in one's luggage or hand and quickly unfolded and set on a selected horizontal surface at a suitable leisure location for use.
- the head rest may also be used to support the head while in the sitting position or even to support a young infant or child as a seat.
- Other uses include providing an elevated platform to temporarily store wallets or glasses off of the sand while at the beach.
- Internal and external rectangular frames of the head rest each comprise two sets of two offset but parallel leg portions whereby each set is tangent above and below, respectively and integrally formed with a central hub. Pivotal connection of the frames is accomplished by insertion of hinge shafts, which depend inwardly from the central hubs of the external frame, through respective centered holes in the central hubs of the internal frames.
- protruding lobes are secured to the ends of the hinge shafts.
- the hinge shafts are rotated within the centered holes so that the lobes function to lock the hubs together thereby preventing removal of the hinge shafts from the centered holes other than when the head rest is in the closed or folded position.
- Multitransitional portions of the frames are comprised of the central hubs and extensions depending therefrom.
- the multitransitional portions provide pivotal hinging portions of the head rest as well as a transitional surface for the rotation of the frames.
- Stops are integrally formed with the offset abutment of the leg portions with the multitransitional portions. Further rotation of the frames is restricted upon the engagement of the stops of the interior frame with the exterior frame.
- the fabric panels are stretched to a horizontal position when open, whereby the top panel provides direct support for the head and the bottom panel contacts the ground, such as beach sand, providing enlarged surface area to prevent the head chair from sinking into the sand.
- the rectangular frames are molded with integral hubs, including their respective hinge shafts and centered holes, as well as the stops.
- the molded components of the frames makes unnecessary additional hinge connecting rivets or screws and braces or support components to reinforce and restrict rotation of the frames.
- FIG. 1 is an environmental view showing the head rest in use.
- FIG. is a perspective view of the head rest in the fully opened position including a portion of the top fabric panel cut away to show the cross member.
- FIG. 3 illustrates the head rest in the closed or folded position. Phantom lines show the relocation of the frames as the head rest begins to unfold.
- FIG. 4 is an enlarged sectional view of one side of the head rest showing the multitransitional portion and central hub of the exterior frame as it is hinged with the interior frame.
- the hinge shaft is insertably locked within the centered hole of the central hubs.
- FIG. 5 is a perspective sectional view of the interior frame multitransitional portion and the exterior frame multitransitional portion depicting the alignment of the hinge shaft with the centered hole for insertion and removal while the head rest is in the folded position.
- FIG. 6 is a perspective sectional view of an alternative embodiment of the multitransitional portion including non keyhole shaped hinge shafts and centered holes.
- FIGS. 7 through 9 are side views illustrating the head rest from a fully closed and folded position progressively through to an unfolded and then fully opened extended position.
- the present invention pertains to a foldable portable head rest 20 to be used to support the head of a person while in the prone or even sitting position.
- the head rest 20 may be compactly folded for carrying inside one's luggage or in one's hand, and quickly unfolded for use at the beach, for example, or while watching television or reading.
- the head rest 20 broadly comprises a foldable frame subassembly 22, further comprising a narrower interior rectangular frame 24 and a wider exterior rectangular frame 26, and a top rectangular fabric panel 28 and bottom rectangular fabric panel 30, each being secured between the ends of the respective interior 24 and exterior 26 frames.
- the headrest 20 In the closed position, the headrest 20 is folded flat with the substantially symmetrical interior 24 and exterior 26 frames abutting one another.
- the fabric panels 28 and 30 are folded, extending inwardly to be stored within the flat rectangular shaped headrest 20.
- the frames are separated diagonally until stops 64 of the interior 24 and exterior 26 frames become engaged and the respective fabric panels are stretched taut to a level position as shown in FIGS. 1 and 2.
- the frame subassembly 22 comprises a pair of rectangular frames, including an interior rectangular frame 24 and an exterior rectangular frame 26.
- the sides of the interior frame 24 further comprise two sets of two parallel but offset leg portions 32.
- the leg portions on each side of the interior frame 24 are tangent respectively, above and below an integrally formed central inner hub 34, each hub having a centered hole 36.
- the exterior frame 26 also includes two sets of two parallel but offset leg portions 32.
- the leg portions 32 on each side of the exterior frame 26 are likewise tangent above and below respectively an integrally formed central outer hub 38, each outer hub having a centered partial hinge shaft 40 extending inwardly from the middle of the central outer hub 38 as shown in FIG. 5.
- the frames are hingedly secured at the central hubs, which are located equidistant between the ends of each set of leg portions 32.
- the head rest may be used with either fabric panel being positioned on top to support the head.
- the interior frame 24 further comprises lower interior legs 42 and upper interior legs 44 while the exterior frame 26 comprises lower exterior legs 46 and upper exterior legs 48.
- Cross members 50 join the leg portions at the upper and lower end of each frame.
- the upper cross members 52 of both the interior 24 and exterior 26 frames provide the supporting member and mounting means for the top fabric panel 28 as shown in FIG. 2.
- Lower cross members 54 of both the interior and exterior frames provide support at the base of the head rest and are used to secure the ends of the bottom fabric panel 30.
- the frames While opening the headrest 20, the frames separate and extend angularly into a criss cross arrangement. Viewing the headrest in the fully open position on a horizontal surface, the lower interior 42 and lower exterior 46 leg portions appear as being in relative tangentially planar position above their inclusive central hubs as shown in FIGS. 4 and 7-9. The upper interior 44 and upper exterior 48 leg portions, in contrast, lie in relative tangentially planar position below the central hubs. Upon closing the head rest to the folded position, the frames come into alignment and abut one another as shown in FIGS. 3 and 9.
- the Multi Transitional Portions Provide for Hinged Connection and Restrictive Pivotal Rotation of the Interior and Exterior Rectangular Frames
- Each central hub and its respective tangential end portions of the set of leg portions further comprise a multi transitional portion 60, located midway along each side of each rectangular frame as shown in FIGS. 1-3 and 7-9 of the drawings.
- the multi transitional portions 60 are offset with respect to the leg portions 32 and serve as a hinging and pivotal interface and guiding surface for the rotation of the interior 24 and exterior 26 frames as the headrest 20 is opened and closed.
- the rectangular frames are secured together at their multi-transitional portions by the insertion of the hinged shafts 40 of the outer central hubs 38 into the centered holes 36 of the inner hubs 34 as shown in FIG. 5.
- the centered holes 36 of the inner hubs 34 are arranged in a keyhole shape while the hinge shafts 40 of the outer hubs 38 are key shaped in appearance, having projecting lobes 62 secured to the ends of the hinge shafts 40 as shown in FIGS. 4 and 5.
- the interior 24 and exterior 26 frames are adapted to be assembled or disassembled only when the head rest 20 is in the folded position. As shown in FIGS. 3 and 5, while the two rectangular frames are positioned in parallel alignment, the hinge shafts may be inserted through the key shaped centered holes whereby the protruding lobes 62 extend inwardly beyond the interior surfaces of the inner central hubs 34.
- the interior 24 and exterior 26 frames Upon unfolding the head rest, the interior 24 and exterior 26 frames rotate from their parallel position to extend diagonally to the fully opened position as shown in FIGS. 7, 8 and 9.
- the hinge shafts 40 are thus rotated within the centered holes 36 whereby the projecting lobes 62 provide a locking means to prevent the frames from being laterally separated while the head rest is in the open or unfolded position.
- the offset position and abutment of the leg portions 32 with their integral multi transitional portions 60 define stops 64 as shown in FIGS. 2 to 9. It may be seen that the interior frame leg portions protrude outwardly in an offset manner from the multi transitional portions 60 of the interior frames 24. The resulting protruding abutment of the leg portion 32 with the multi transitional portion 60 forms a stop 64. In a similar fashion, stops 64 are formed by the inward protruding leg portions of the exterior frame 26 at the point of abutment with the multi transitional portions 60.
- Rectangular fabric panels 29 and 30 are secured to the top and bottom of the head rest respectively and may be interchangeably reversed to provide the support surface for the head.
- the panels are preferably made with nylon to prevent tearing or stretching during use.
- each panel is secured to opposite interior 24 and exterior 26 frame cross members respectively whereby the top panel 28 is secured to the upper interior and upper exterior cross members 52 while the bottom panel 30 is secured to the lower interior and lower exterior cross members 54.
- the ends of each panel are folded around the respective cross member and secured, such as by machine sewing.
- the width of each panel is preferably equal to the length of a cross member 50.
- the top fabric panel 28 provides direct support for the head while the bottom panel 30 contacts the floor or ground, such as beach sand.
- the bottom panel 30 provides a large surface area supporting the headrest on soft ground such as sand.
- the lower portions of the frames are thereby prevented from sinking into the sand or soft ground.
- Downward forces applied by the weight of the head on the frame subassembly 22 are generally resisted by the stops 64 which prevent further downward rotation of the upper leg portions as well as further upward rotation of the lower leg portions.
- Top 28 and bottom 30 panels provide some resistance and rotational limitations upon the frames and additional support for their respective upper and lower portions of the frame subassembly when the panels are fully stretched in the open position.
- each fabric panel folds upon itself to extend inwardly and be stored within the frame subassembly 22 during non use as shown in FIG. 3.
- the fabric panels are preferably of sufficient length to permit full extension of the rectangular frames and engagement of the stops. At this point, the fabric panels should also be stretched tautly so as to provide adequate support for the head.
- the primary purpose of the headrest 20 is to provide support to a person's head while in the reclining position. Alternatively, a small infant might also be supported in the sitting position on the headrest.
- the headrest 20 may also serve as a small table or elevated support for small items such as wallets or eyeglasses. This may be particularly useful at the beach where such items may be subject to damage by being left in the sand.
- an alternative hinging means would eliminate the locking feature of the projecting lobes 62 and provide for cylindrically shaped hinge shafts 40 on the outer hubs 38.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Pulmonology (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/659,693 US4544203A (en) | 1984-10-11 | 1984-10-11 | Foldable head rest |
CA000479133A CA1209455A (en) | 1984-10-11 | 1985-04-15 | Foldable head rest |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/659,693 US4544203A (en) | 1984-10-11 | 1984-10-11 | Foldable head rest |
Publications (1)
Publication Number | Publication Date |
---|---|
US4544203A true US4544203A (en) | 1985-10-01 |
Family
ID=24646410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/659,693 Expired - Fee Related US4544203A (en) | 1984-10-11 | 1984-10-11 | Foldable head rest |
Country Status (2)
Country | Link |
---|---|
US (1) | US4544203A (en) |
CA (1) | CA1209455A (en) |
Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4641883A (en) * | 1985-04-15 | 1987-02-10 | K.K. Iwai | Foldable support |
US4705247A (en) * | 1985-09-11 | 1987-11-10 | Rubbermaid Commercial Products, Inc. | Collapsible utility cart |
US4778218A (en) * | 1986-12-12 | 1988-10-18 | Prince Corporation | Adjustable headrest |
US4796314A (en) * | 1986-12-22 | 1989-01-10 | Stephanie Garduno | Portable infant furniture |
US4828321A (en) * | 1988-02-18 | 1989-05-09 | Michael Harper | Portable beach lounge |
US4922558A (en) * | 1988-08-08 | 1990-05-08 | Porco Patricia A | Headrest for use in beauty shop shampoo bowls, sinks and the like |
US5044690A (en) * | 1990-03-14 | 1991-09-03 | Torrey Ralph H | Folding stool |
US5379891A (en) * | 1993-11-24 | 1995-01-10 | Coleman; Jeffrey A. | Footstool apparatus adapted for being carried in a guitar case, and guitar carrying case apparatus with same |
US5456048A (en) * | 1993-12-13 | 1995-10-10 | Caradon Better-Bilt, Inc. | Muntin clip |
US5507508A (en) * | 1995-06-02 | 1996-04-16 | Liang; Sung-Ming | Trunk case assembly |
US5509360A (en) * | 1994-12-09 | 1996-04-23 | Waffer Industrial Corp. | Foldable tray table |
US5551110A (en) * | 1994-06-03 | 1996-09-03 | Beachead Products Company | Collapsible shade for head chair |
US5762310A (en) * | 1996-02-09 | 1998-06-09 | Schill; Francine E. | Infant seat support with a resting surface having an adjustable height |
US5947489A (en) * | 1996-10-23 | 1999-09-07 | E-Z Red Company | Foldable creeper |
US6443074B1 (en) * | 2000-01-06 | 2002-09-03 | Adams Manufacturing Corp. | Folding table |
US6666151B2 (en) | 2000-01-06 | 2003-12-23 | Adams Manufacturing Corp. | Folding table |
US20040016315A1 (en) * | 2002-02-12 | 2004-01-29 | The University Of Tokyo | Backlash clutch and joint mechanism for a robot comprising the clutch |
GB2393374A (en) * | 2002-05-16 | 2004-03-31 | Sharon Mary Mills | Treatment cradle and treatment tray for fish |
US20040081510A1 (en) * | 2002-10-28 | 2004-04-29 | Edward Zheng | Folding joint arrangement for foldable furniture |
US20040140696A1 (en) * | 2003-01-16 | 2004-07-22 | Grace Daniel R. | Portable collapsible seat |
US20040227381A1 (en) * | 2003-05-15 | 2004-11-18 | Travel Caddy, Inc. D/B/A Travelon | Collapsible portable seat construction |
US6871861B2 (en) | 2002-10-08 | 2005-03-29 | Alltrade Tools Llc | Foldable creeper |
US20050151408A1 (en) * | 2004-01-12 | 2005-07-14 | Georgette Pratte | Portable foldable leg rest |
US7048331B2 (en) * | 2004-09-28 | 2006-05-23 | Razmik Saakyan | Universal, portable, foldable, heavy duty, light weight chair |
US20070228780A1 (en) * | 2006-03-28 | 2007-10-04 | Grace Daniel R | Collapsible articles of furniture |
US20080173498A1 (en) * | 2007-01-12 | 2008-07-24 | Bradley J. Beyor | Collapsible sawhorse |
GB2447099A (en) * | 2007-02-28 | 2008-09-03 | Space Net Technology Ltd | Support assembly comprising pivotally connected frame members |
US20090008971A1 (en) * | 2007-07-06 | 2009-01-08 | Evan Ellsworth | Collpasible child seat |
US20090167063A1 (en) * | 2008-01-02 | 2009-07-02 | Paul Edward Brunner | Chair Apparatus |
WO2012038836A2 (en) * | 2010-09-20 | 2012-03-29 | Rafael Alberto Talavera Tolentino | Combination backpack and seating apparatus |
US20120181823A1 (en) * | 2008-01-02 | 2012-07-19 | Paul Edward Brunner | Chair Support Apparatus |
US20120267929A1 (en) * | 2011-04-25 | 2012-10-25 | Erik Robert Donley | Racquet chair |
US20140265186A1 (en) * | 2013-03-15 | 2014-09-18 | Onward Multi-Corp Inc. | Portable cooking apparatus |
US20150069191A1 (en) * | 2013-09-11 | 2015-03-12 | Kristin Filseth | Portable stand |
US9144312B2 (en) | 2012-01-06 | 2015-09-29 | Gci Outdoor, Inc. | Portable, collapsible stool with a swivel seat |
US9398992B1 (en) * | 2014-05-30 | 2016-07-26 | Kathleen Suzanne Jansen | Pressure free face rest |
USD770223S1 (en) * | 2013-03-15 | 2016-11-01 | Onward Multi-Corp Inc. | Foldable grill with offset legs |
RU171146U1 (en) * | 2016-04-25 | 2017-05-22 | Кирилл Викторович Кузин | Device for supporting the head of a user sitting in front of a computer |
US20180055214A1 (en) * | 2015-02-13 | 2018-03-01 | Samhongsa Co., Ltd. | Height-adjustable desk |
US9936812B2 (en) * | 2016-02-19 | 2018-04-10 | Frances Kessler | Leg support assembly |
US20190053647A1 (en) * | 2015-03-04 | 2019-02-21 | Hiromi Sakamoto | Suspension pillow |
US20190059599A1 (en) * | 2017-08-22 | 2019-02-28 | Mindful Mission, LLC | Foot swing |
USD860663S1 (en) * | 2018-04-05 | 2019-09-24 | Crownwell, LLC | Toilet stool |
USD878806S1 (en) * | 2017-10-17 | 2020-03-24 | Ju-Yi Ma | Cervical pillow |
US10731789B1 (en) | 2014-04-30 | 2020-08-04 | Leslie J. Dorsett | Support device for a purse or other personal item |
USD945198S1 (en) * | 2020-04-22 | 2022-03-08 | Sand Lounger Llc | Combination digging device and head rest |
US11464152B2 (en) | 2019-07-19 | 2022-10-11 | Sand Lounger Llc | Combination digging device and head rest |
US20220400866A1 (en) * | 2019-10-04 | 2022-12-22 | The Coleman Company, Inc. | Compact furniture |
USD1005030S1 (en) * | 2021-04-20 | 2023-11-21 | Zihao Shi | Rocking chair frame |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9782317B2 (en) | 2014-11-28 | 2017-10-10 | Mary Madeline Mount | Head support device |
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US59403A (en) * | 1866-11-06 | Improved rubber-coated leather | ||
US116164A (en) * | 1871-06-20 | Improvement in folding-table supports | ||
US226453A (en) * | 1880-04-13 | Car-wheel | ||
US278361A (en) * | 1883-05-29 | Portable head-rest | ||
US407776A (en) * | 1889-07-30 | Signor of one-half to john f | ||
US1209679A (en) * | 1914-09-02 | 1916-12-26 | Harold E Decker | Interlocking frame for stands and the like. |
US1921984A (en) * | 1932-08-04 | 1933-08-08 | Moore David Pelton | Combined sunshade and headrest |
US2197343A (en) * | 1938-03-02 | 1940-04-16 | Marx Siegfried | Foldable headrest |
US2502752A (en) * | 1947-07-17 | 1950-04-04 | Richards Lillian | Head and limb rest |
US2563700A (en) * | 1948-06-14 | 1951-08-07 | Joseph L Wolf | Beach pillow |
US2574590A (en) * | 1949-08-05 | 1951-11-13 | Ross Mark | Portable headrest |
US2697581A (en) * | 1949-02-14 | 1954-12-21 | Gen Controls Co | Electromagnetically operated valve with adjustable opening |
US3002201A (en) * | 1959-01-28 | 1961-10-03 | Milton T Nelson | Head rest |
US4295571A (en) * | 1979-04-27 | 1981-10-20 | Deflecto Corporation | File folder support rack |
-
1984
- 1984-10-11 US US06/659,693 patent/US4544203A/en not_active Expired - Fee Related
-
1985
- 1985-04-15 CA CA000479133A patent/CA1209455A/en not_active Expired
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
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US59403A (en) * | 1866-11-06 | Improved rubber-coated leather | ||
US116164A (en) * | 1871-06-20 | Improvement in folding-table supports | ||
US226453A (en) * | 1880-04-13 | Car-wheel | ||
US278361A (en) * | 1883-05-29 | Portable head-rest | ||
US407776A (en) * | 1889-07-30 | Signor of one-half to john f | ||
US1209679A (en) * | 1914-09-02 | 1916-12-26 | Harold E Decker | Interlocking frame for stands and the like. |
US1921984A (en) * | 1932-08-04 | 1933-08-08 | Moore David Pelton | Combined sunshade and headrest |
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US2563700A (en) * | 1948-06-14 | 1951-08-07 | Joseph L Wolf | Beach pillow |
US2697581A (en) * | 1949-02-14 | 1954-12-21 | Gen Controls Co | Electromagnetically operated valve with adjustable opening |
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Cited By (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4641883A (en) * | 1985-04-15 | 1987-02-10 | K.K. Iwai | Foldable support |
US4705247A (en) * | 1985-09-11 | 1987-11-10 | Rubbermaid Commercial Products, Inc. | Collapsible utility cart |
AU578200B2 (en) * | 1985-09-11 | 1988-10-13 | Rubbermaid Commercial Products Inc. | Collapsible utility cart |
US4778218A (en) * | 1986-12-12 | 1988-10-18 | Prince Corporation | Adjustable headrest |
US4796314A (en) * | 1986-12-22 | 1989-01-10 | Stephanie Garduno | Portable infant furniture |
US4828321A (en) * | 1988-02-18 | 1989-05-09 | Michael Harper | Portable beach lounge |
US4922558A (en) * | 1988-08-08 | 1990-05-08 | Porco Patricia A | Headrest for use in beauty shop shampoo bowls, sinks and the like |
US5044690A (en) * | 1990-03-14 | 1991-09-03 | Torrey Ralph H | Folding stool |
US5379891A (en) * | 1993-11-24 | 1995-01-10 | Coleman; Jeffrey A. | Footstool apparatus adapted for being carried in a guitar case, and guitar carrying case apparatus with same |
US5456048A (en) * | 1993-12-13 | 1995-10-10 | Caradon Better-Bilt, Inc. | Muntin clip |
US5551110A (en) * | 1994-06-03 | 1996-09-03 | Beachead Products Company | Collapsible shade for head chair |
US5509360A (en) * | 1994-12-09 | 1996-04-23 | Waffer Industrial Corp. | Foldable tray table |
US5507508A (en) * | 1995-06-02 | 1996-04-16 | Liang; Sung-Ming | Trunk case assembly |
US5762310A (en) * | 1996-02-09 | 1998-06-09 | Schill; Francine E. | Infant seat support with a resting surface having an adjustable height |
US5947489A (en) * | 1996-10-23 | 1999-09-07 | E-Z Red Company | Foldable creeper |
US6666151B2 (en) | 2000-01-06 | 2003-12-23 | Adams Manufacturing Corp. | Folding table |
US6715429B2 (en) | 2000-01-06 | 2004-04-06 | Adams Manufacturing Corp. | Folding table |
US6443074B1 (en) * | 2000-01-06 | 2002-09-03 | Adams Manufacturing Corp. | Folding table |
US20040016315A1 (en) * | 2002-02-12 | 2004-01-29 | The University Of Tokyo | Backlash clutch and joint mechanism for a robot comprising the clutch |
US6948400B2 (en) * | 2002-02-12 | 2005-09-27 | The University Of Tokyo | Backlash clutch and joint mechanism for a robot comprising the clutch |
GB2393374A (en) * | 2002-05-16 | 2004-03-31 | Sharon Mary Mills | Treatment cradle and treatment tray for fish |
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